As a rule of thumb, you’ll need roughly 10 watts of heating power for every square foot of floor area in the room.

5,100 BTUs

Your electric heater wattage tells how much electricity is needed to power it. Let’s go ahead and assume you’ve got a 1,500-watt heater. Since 1,000 watts equals 1 kilowatt, that means your heater uses 1.5 kilowatts of power.

A common wattage for space heaters is 1,500 watts. Apply the formula 1,500 x 24 ÷ 1,000 x $0.20 to determine the cost to run the space heater for a day. (Dividing by 1,000 changes watt hours to kilowatt hours.) In this case, it will cost $7.20 if it was running for 24 hours straight.

An electric space heater rated at 1,500 watts will put out the same amount of heat regardless what you pay for it. You would be better off to take the money you would spend on a space heater and put it toward weatherization improvements to your home, such as adding insulation and caulking.

Top 8 Space Heater for Large Room Reviews 2021

• Best Large Room Space Heaters & Reviews.
• #1 AmazonBasics Portable Space Heater 1500W.
• #2 Cadet Com-Pak Twin 4000W Wall Heater with Thermostat.
• #3 Comfort Zone Oscillating Space Heater Tower with Remote Control.
• #4 Pro Breeze 1500W Mini Ceramic Space Heater.

Ceramic heaters are easily portable and give off a great deal of heat from a small box. These heaters tend to be more energy efficient and safer than many heaters, so even though they heat up quickly, their plastic casings stay cool.

My ceramic space heater uses 1500 watts and costs me about 18 cents an hour to use, at 12 cents per kWh. I probably use it about 8 hours a day, which makes it $1.44 a day. If you do not turn the thermostat down and add more heat with the electric space heater, you will increase your total bill.”

Infrared heaters can be hotter to touch, but better for your overall health than ceramic heaters. And, lastly, ceramic heaters come out on top when it comes to heating up larger spaces, while infrared heaters are more efficient at heating small or localized living areas.

An oil heater’s radiator-like construction maximizes heat exchange with the air. Of course, the oil also radiates heat, but it does so at a slower rate. The heating element consumes as much electricity as that of any resistive heater when it’s on, but thanks to the heat sink created by the oil, that isn’t all the time.

Answer: Yes, you can leave an oil heater on overnight. Oil heaters are designed to be very safe. Oil heaters are a lot less likely to cause you any trouble when you leave them on overnight.

Generally, using a 1500W oil heater is not more expensive than using your regular central heating radiator. To be very precise, an average oil heater that you run for 8 hours every day, will cost you about $43 of electricity cost per month.

Electric Heating Electricity Cost Calculator

According to the Centre for Sustainable Energy, a 2kW convector or fan heater will cost 28 pence per hour to run; a typical 1.5kW oil-filled radiator will set you back 21 pence per hour; while a 1.2kW halogen heater costs around 17 pence per hour.

Oil-filled heaters are generally cheaper to run due to better heat retention. Though they take longer to heat up, the can then change to ‘low’ power and use much less energy to maintain a warm temperature. Electric fan heaters lose their heat quickly, so need to stay on a higher power to keep the temperature high.

Best Oil Filled Radiators

• De’Longhi Dragon 4 Oil Filled Radiator.
• Pro Breeze® 2500W Oil Filled Radiator.
• Futura 2500W Oil Filled Radiator.
• NETTA 2500W Oil Filled Electric Heater Radiator.
• Dimplex OFC2000TiB Oil Filled Radiator.
• VonHaus Oil Filled Radiator – Black.
• Kingavon Slimline Oil Filled Radiator.
• Oypla Electrical Portable Oil Filled Radiator.

Oil filled heaters are also over 99 percent energy efficient. Almost all the electricity the consume is converted directly into heat. A high heat capacity allows the oil can absorb and retain a very large amount of heat.

The oil inside these radiators retains heat better than dry radiators. Oil filled radiators turn off when the room reaches the desired temperature. But even after they’re stopped heating up, the room will stay warm for a time. This makes oil filled radiators good choices for large rooms or rooms your family uses a lot.

Oil-free radiators contain, as the name suggests, no oil. This means that there is no pressurised container – removing the risk of any ruptures and leaks. They are also, on average, 10% lighter than their equivalent Oil-filled radiators, making for greater portability and ease of use.